Using a flexible tape measure, have someone measure starting at that spot and running down along the curve of your spine.

Place your hands on your hips so you can feel your iliac crest, which serves as the “shelf” of your pelvic girdle. (It’s the first hard thing you feel when you run your fingers down from the sides of your ribcage.) Position your hands so your thumbs are reaching behind you.

Have your friend finish measuring at the point where the tape crosses an imaginary line drawn between your thumbs. This distance is your torso length.

Small (15.0” - 17.0” torso)

Medium (17.0” - 19.0” torso)

Large (19.0” - 21.0” torso)

Tall (21.0”+ torso)

If your measurement falls right in between sizes (for example, if you have a 17.0” torso, so you are right on the line between a Small and a Medium), we suggest you choose the larger torso size.

We thought of K2, the Latoks and Alaska’s Hayes Range (places where weight really makes a difference) when we honed our 4400 Ice Pack for the rugged alpine climber and ski touring maniac. We streamlined this minimalist expedition backpack to carry exactly what you need and nothing more for multiple days in the most extreme or high altitude environments. It’s large enough for the traverse in, yet minimalist and light enough for the day on the wall. Like all of our 70-liter packs, this ultralight pack has additional plastic frame sheet for added load carrying capacity. Made from 100% waterproof Dyneema® Composite Fabrics (formerly Cuben Fiber), the 4400 Ice Pack is highly durable and weatherproof. Use this backpack with our Stuff Sacks for a nearly perfect waterproof kit.

We can custom fit this pack for skiers by adding reinforced fully-woven Dyneema® side panels, bottom and ski holsters. Add $100 and allow three weeks for delivery.